Electric lamp



, June 3, i930. L. o. PARKER 1,761,022

ELECTRIC LAMP Filed Oct. 51. 1927 Patented June'S, 1930 nisir EDf .TAi'-IE rricE.

LESLIE o. :PARKEaor annnnsoiniivnmim, ssrsncnro nnnco-nniviy compassion,

1 ornnv'ron, 01110,- A-COR-POEATION or nnrinwsnn" I v ELnorn-ic LAMP Application filcduficto b er 31,1922; Serial "No. ceases.

This invention relates to the manufacture of electric lamps especially for automotive" vehicles and to means for securing the lamp to the vehicle invarlous pos tions ofadyustment.

The ob'jectsof the invention include such improvements in constructionof lamps and method of mounting that the construction lines 22 of Fig. 1 showing the lamp in two. positions of adjustment relative to the sufiportingstructure such asthe cowl of the ve icle; Fig. 4 is a fragmentary sectional view on the line 4 4 of Fig. 2; and

Fig. 5 is a fragmentary view of tor wire end.

Referring to the drawings, the'lamp housingor shell '20 which encloses the incandescent bulb 21, is adaptedto receive a door the conneccomprising a bezel ring 22, a lens 23'and a lens clamping ring-24L having a: flange25 adapted to engage the edge of the shell 20. The ring 22 fits around the shell20 and is secured in position by a clamping member 26 having arms27 which extend through di;

ametrically opposite notches 28 adjacent the edge of the shell 20 and which terminate in hooks 29 which engage a flange 30 with which the ring 22 is provided. The member is retained in position loy' screw 31' passing through a plan'ehole in theback-of the shell 20 and through'atapped hole in the yoke por:

I tion 32 ofthe clamping member 26.; o

- The shell 20 is provided witli an' opening for receiving alamp socket'AO whichis formed preferably by drawing from sheet metal. The socket 4Q passes through an open-' ing of the'shell 20, whichopening is sur-f rounded by. anexternal annular flange 41 to which the'socket40 is secured by 'spot'welding in several placesg Adjacent its upper. end the socket'eO is provided with diametri- 'c'ally opposite'bayenet slots'one of wh'ich-is shown at 4 2E01 receiving a metallic lamp? base 44; The oases l carries acenter contact 4 .5 insulated from the metallic part of the basa t-4 which is in contact with thesleeve 40. I The contact 455 is resiliently engaged by the hared end of a conductorwire iag'a'inst "ai co ntact lta which is formed byfsoldering a metal wash-@1248 whichinturn is located 7 against non conducting Washer 4 9 which 7 surrounds the b'ared end of the conductor47 and ah'uts' the endht) ofthe insulation of the conductor. -A spring39 located within the socket presses at one end against a portion (ifftl le socket and at the other against the nonconducting washer 111' order to urge the conductorend 46 against the center contact 45.

The -conductor 47" {passes through vthe threaded tubular end 51 of theso'cket mem ber 4ft), said threaded end 51 "cooperating witha nut '52 and a lock washer 53 to clamp the lamp to a supporting structuresuchas the cowl 54 of anautomobile -The cowl housing 54 which ismade preferably of sheet metal is provided with a hole 55 for receiving th threaded sleeve -5-1-',--and the material.

ofthe cowl adjacent thehole 55- is dished slightly at 56toprovide a recess for receiv ing-a dished 'niember 57 which is, joinedhy a seam 58 to a seatmember-59 having a; some what spherical portion 60- tor receiving a corresponding spherical portion BI-Kwith which the lamp sccket lO isf-previded. U The construction is such. that the lamp is secured to the' cowl 54' in various pOQSiuions of adjustment. As shown 1nj-Fig. 2,'-the lamp 1 is secured to tl e cowl'in sucha nannertha't the lens and} door-is substantially vertical.

It WillZlbQ ricted that the lockwasher 3 is located substantially; symmetrical with respect to the sleeve 5l-andnnt '52 as viewed inthe 'drawing's, tli at is, 'the ends 53? and 53? of ;'the spl t-washer" are located ad acent the 'e'e'nter line of-thesleeVe-fil asvicw'e'dfin Fig. 'j

ZOO

2. If it is desiredto secure the lamp to'the the lamp is held in the desired location while naturally turn to a position shown in Fig. 3

in which its ends 53 and 53 will occupy the widest space between the nut 52 and the cowl 54, while the part of the washer diametrically opposite to its ends 53 and 53 will occupy the narrowest part of the space between the nut 52 and the cowl 54. As the nut is tightened, the ends 53 and 53 of the lock washer will be bent beyond normal condition so that these ends will frictionally engage the nut and cowl respectively to prevent turning of the nut. Thus the nut cooperates with the threaded sleeve 51 to clamp the spherical portion 59 of the lamp socket member against the spherical portion of the socket washer 59 while at the same timev clamping the dished Washer 57 against the dished portion 56 of the cowl 54.

Vithin certain limits of adjustment the lamp may be secured to the cowl in various positions of adjustment simply by loosening the nut 52, turning or tilting the lamp housing 20 into the desired position and then tightening the nut 52 as explained before. During the operation of tightening nut 52, the lock Washer will adjust itself or turn with the nut so that it will be located in such manner as to act as a wedge shaped member which will permit location of the nut in clamping position in one portion of the nut closer to the cowl than the diametrically opposite portion.

As the manner of securing the lamp door to the lamp shell is described and claimed in Persons Patent #l,531,307 further detailed description is unnecessary.

While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow. 7 v r What is claimed is as follows:

1. An electric lamp having a shell and a threaded supporting stem provided externally with a spherical portion, a seat member having a corresponding spherical recess for receiving said spherical portion of the stem and having a central aperture for loosely receiving the threaded portion of the stem, a dished member secured to said seat member and apertured to receive said-stem, a nut threaded on the stem for clamping the spherical portion-of the stem against the spherical portion of the recess, and awasher member located between the nut and the seat memher, said washer member being so constructed that one portion thereof will occupy a greater space between the nut and the socket mem her than a portion diametrically opposite whereby the angular relation of the washer to the stem will determine the inclination of the stem to the seat member when the nut is tightened on the stem to clamp the stem to the seat member, said seat member, dished member and washer providing a yieldable support for said lamp.

2. An electric lamp according to claim 1 in which the washer is a split-ring lock washer having its prongs substantially offset forv the purposes specified.

.3. An electric lamp having a shell and a threaded supporting stem provided externally with a spherical portion integrally connecting a lamp socket with said threaded stem, an apertured seat member having a corresponding spherical recess for receiving said spherical portion of the stem, a dished member secured to said seat member adapted to be received by a depression in the auto body, and means cooperating with said stem for maintaining said lamp socket and stem in predetermined angular relation with said seat and dished members and said auto body. 7

In testimony whereof 1 hereto affix my signature. a

LESLIE O. PARKER. 

